1. ExpressRoute for Office 365 Training
Network Assessments and other Skype for Business Considerations – Day 2 Session 3

2. Topics Skype for Business Online Network Connectivity
4/16/2018
Topics
Skype for Business Online Network Connectivity
Skype for Business Online Network Performance Requirements
Skype for Business Online Network Connectivity Considerations
Network Assessment Types
© 2015 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. Skype for Business Online Network Connectivity
4/16/2018 9:45 PM
Skype for Business Online Network Connectivity
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. Skype for Business Online Traffic Flows
P2P calls – internal/external, Conference calls, PSTN calls
Peer-to-Peer calls - internal

5. Signaling and Data Collab Protocols#
What for
Data
Transport
Source Port
Destination
Port
Encryption
What happens if disabled? 1
Signaling – Windows, Mac
SIP
TCP
Windows:
443
Full TLS
Can’t sign in
No IM 2
Signaling – Web, mobile
HTTP 3
Data collab – file attachments, PPT upload, whiteboard, Q&A, poll
PSOM
No content sharing in meeting 4
PowerPoint presentation service
No PPT in meeting 5
Service IP number resolution
DNS
UDP 53
Can’t join

6. Media Protocols IP & URL whitelist Ports NAT#
What for
Data
Transport
Source Port
Destination
Port
Encryption
What happens if disabled? 1
Audio – Windows, Mac, Web, Mobile
RTP
UDP
50,000 – 50,019
UDP 3478
UDP 50,000 – 59,999
Secure RTP
Audio cannot flow over UDP ports (preferred) 2
TCP
TCP 443,
TCP 50,000 – 59,999
Audio cannot fall back to TCP (less reliable) 3
Video – Windows, Mac, Web, Mobile
50,020 – 50,039
Video cannot flow over UDP ports (preferred) 4
Video cannot fall back to TCP (less reliable) 5
Desktop or Application Sharing - Windows, Mac, Web, Mobile
RDP/RTP
50,040 – 50,059
Desktop or Application Sharing does not work
IP & URL whitelist
Allow outbound UDP/TCP traffic to Office 365 URLs and IP address ranges
URLs and IP address ranges updated monthly. Subscribe via RSS feed to get change notification
Blocking Office URLs and IP addresses may result in broken user experience
Ports
Minimum: Allow outbound TCP traffic to destination port 443
Better: In addition, allow outbound UDP/TCP traffic to destination port 3478
Best: In addition, allow outbound UDP/TCP traffic to destination port range 50,000 – 59,999
NAT
Source NAT is recommended
Network address/port mapping must not change during any Skype audio/video/screen sharing session

7. Skype for Business Online Network Performance Requirements
4/16/2018 9:45 PM
Skype for Business Online Network Performance Requirements
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. Network Performance Requirements
Microsoft 2016
4/16/2018 9:45 PM
Network Performance Requirements
Customer
Network Edge
Internet/ ER
Microsoft
Network Edge
SfB Online DC
Client
WiFi
LAN
Client-MNE
Microsoft Network
RTT <=100ms
Customer Network
CNE-MNE
RTT <=60ms
Call flow media path
SFB Services
SfB Client
Media Relay
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. Network Performance Requirements
Microsoft 2016
4/16/2018 9:45 PM
Network Performance Requirements
For optimal Skype for Business media quality, the following network performance requirements should be met:
Metric
Client to Microsoft Network Edge
Customer Network Edge to Microsoft Network Edge
Latency (one way)
<50ms
<30ms
Latency (RTT or Round-trip Time)
<100ms
<60ms
Burst packet loss
<10% during any 200ms interval
<1% during any 200ms interval
Packet loss
<1% during any 15s interval
<0.1% during any 15s interval
Packet inter-arrival jitter
<30ms during any 15s interval
<15ms during any 15s interval
Packet reorder
<0.05% out-of-order packets
<0.01% out-of-order packets
Media Quality and Network Requirements at:
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Measuring and Monitoring Network Performance
When to measure?
Plan
One time network assessment to determine network readiness
Pinpoint network issues for remediation
Deploy
Validate network performance
Validate network remediation
Operate
Before/After major network change
Before/After network configuration change
Before/After Internet access/ER change
On-going network performance monitoring for performance drift
How to measure?
Use tools recommended by Skype Operations Framework
Target Skype’s world wide Anycast IP –
Assess both your network and connections to Office 365
Assess with enough data to cover all network traffic patterns
Assess for >= 1week
Measurement every ~10 minutes
Use the 90th percentile value
Compare results with Network Performance Requirements

11. Network Assessment Tool Demo

12. Skype for Business Online Network Connectivity Considerations
4/16/2018 9:45 PM
Skype for Business Online Network Connectivity Considerations
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. Bandwidth Planning E2E Network Bandwidth planning is critical
4/16/2018 9:45 PM
Bandwidth Planning
E2E Network Bandwidth planning is critical
Congestion on any part of the Skype for Business media path introduces delay, loss, and jitter
Use Skype for Business Bandwidth Calculator for network bandwidth calculation
Purchase correct amount of bandwidth at the right locations for internet/ER egress and for internal WAN. Provision for peak time traffic.
Estimated bandwidth utilization for media codecs (all numbers in kbps):
Audio codec
Scenario
Audio payload
PLUS - IP header
PLUS - UDP, RTP & SRTP
PLUS - FEC
RTAudio Wideband
Peer-to-peer
29.0
45.0
57.0
86.0
RTAudio Narrowband
Peer-to-peer PSTN
11.8
27.8
39.8
51.6
G.722
Conferencing
64.0
80.0
95.6
159.6
G.722 Stereo
LRS P2P & Conf
128.0
144.0
223.6
G.711
PSTN
92.0
156.0
Siren
16.0
32.0
47.6
63.6
SILK Wideband
36.0
52.0
100.0
26.0
42.0
54.0
20.0
48.0
68.0
SILK WB/NB
13.0
41.0
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. QoS (Quality of Service)
4/16/2018 9:45 PM
QoS (Quality of Service)
Prioritize real-time media in congested situation
However QoS cannot replace a properly provisioned network with enough bandwidth
Implementing QoS
Must: Enable QoS in your internal network (Wifi, LAN, WAN)
Optional: Enable E2E QoS by implementing ExpressRoute
Source Port based DSCP marking, e.g. from source port , add audio DSCP tag
Configure DSCP using Windows group policy or at the network switches and routers
Traffic Class
Treatment (DSCP Marking)
Skype for Business workloads
Voice
EF (46)
Skype for Business and Lync voice
Interactive
AF41 (34)
Video
AF21 (18)
Application sharing
Default
AF11 (10)
File transfer
CS0 (0)
Anything else
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. Network Assessment Types
4/16/2018 9:45 PM
Network Assessment Types
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. 4/16/2018 9:45 PM
Network assessments Documentation for all of these at Required for Skype voice and meetings, recommended for Exchange and SharePoint
Network Planning Performance Remediation
Office 365 Bandwidth Planning
Microsoft Consulting Services
Tune site Excel calculators plus pilot measurement
Performance Issues
Premier Support Office 365 Network Performance Assessment
Plan for Audio and Meetings
Skype Neptune Partners
MCS
Use WinRoom Template
Skype Audio or Meetings performance issues
Office 365
Skype for
Business specific
© 2015 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. Session Takeaways Network performance is key to SFB media experience
4/16/2018 9:45 PM
Session Takeaways
Network performance is key to SFB media experience
Network assessment before, during, and after SFB Online implementation
Allow outbound UDP/TCP traffic to Office 365 URLs, IP ranges and ports
Bandwidth and QoS Planning go hand-in-hand
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

18. 4/16/2018 9:45 PM
Links Required for Skype voice and meetings, recommended for Exchange and SharePoint
Office 365 IP Addresses and DNS
Skype Network Assessment partners
New guidance: Skype for Business Online Media Quality and Network Connectivity (click first link on this page)
Skype Operations Framework
Plan Network Requirements for Skype for Business
Skype for Business Bandwidth Calculator
Lync Server 2013 Guide for Network Planning, Monitoring, and Troubleshooting
Use Microsoft Premier Support for an Office 365 Network Performance Assessment
General Office 365 Network Performance Troubleshooting
Hao’s talk at Ignite
© 2015 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

19. © 2016 Microsoft Corporation. All rights reserved
© 2016 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.